Grain-boundary carbide precipitation and intergranular corrosion in sensiti
zed austenite stainless steel were examined by transmission electron micros
copy to clarify the effect of grain-boundary structure on precipitation and
corrosion. The propensity to intergranular precipitation depends strongly
on the grain-boundary structure. Carbide precipitates lend to be detected n
t grain boundaries with higher Sigma values or larger deviation angles (Del
ta theta) from low-Sigma coincidence site lattice misorientations. The more
ordered boundary requires a longer time for intergranular carbide precipit
ation and corrosion than less ordered or random boundaries.